Watch Obama crack jokes with the 1972 Miami Dolphins

Forty years after the 1972 Miami Dolphins went undefeated and won Super Bowl VII, President Barack Obama welcomed team members and Hall of Fame coach Don Shula to the White House on Tuesday.Some were gray-headed, others a bit stooped, at least one carried a cane. But despite age, there were still hints of the large frames that once had been covered in football pads and which had exploded from lines of scrimmage countless times in an unforgettable season."I know that ...